Cellular schwannoma arising from sigmoid mesocolon presenting as torsion.

Schwannomas are a type of peripheral nerve sheath tumors with clinically indolent behavior. Though, they can occur anywhere in body, the incidence in retroperitoneum, mediastinum, and pelvis is exceedingly rare. We present a case of a 58-year-old female with a massive twisted tumor arising from sigmoid mesocolon. The tumor was diagnosed to be a case of cellular schwannoma, an exceedingly rare tumor in this location with rare presentation.